Last Modified: Feb 13, 2019
See more info
Known Affected Versions:
11.6.0, 11.6.0 HF1, 11.6.0 HF2, 11.6.0 HF3, 11.6.0 HF4, 11.6.0 HF5
12.0.0, 11.6.0 HF6
Opened: Sep 16, 2014
Related AskF5 Article: K16629
bigd crash on improper monitor configuration (timeout less than the interval) for Tcl monitors.
bigd crashes and posts an error message similar to the following: Received invalid magic value in the stream'.
Tcl Monitors: FTP, SMTP, POP3, IMAP, when the timeout is less than the interval. Might also occur if the Tcl worker is in a stuck state, due to pool member not responding within the configured timeout.
Correct the monitor timeout to be higher than interval. Generally, the timeout should be ((3 * interval) + 1) seconds. Note: This workaround might not work in cases where the failure is due to Tcl worker being in a stuck state due to the pool member not responding within the configured timeout.
The system no longer crashes when Tcl monitors are improperly configured, that is, when the timeout specified is less than the interval.